Diffusion volumes were skull-stripped using FSL's BET, v5.0.10. Volumes were subsequently corrected for eddy currents and motion using FSL's EDDY tool, v.5.0.10 [1]}). Anatomical scans were processed with FreeSurfer (http://surfer.nmr.mgh.harvard.edu/) v6.0.0. Surface reconstructions were used to generate subject-specific parcellations based on the Lausanne atlas from the Connectome Mapper Toolbox [2]}. Each parcel was then individually warped into the subject's diffusion space. Using DSI-Studio (http://dsi-studio.labsolver.org), orientation density functions (ODFs) within each voxel were reconstructed from the corrected scans using GQI [3]}. We then used the reconstructed ODFs to perform a whole-brain deterministic tractography using the derived QA values in DSI-Studio [3]}. We generated 1,000,000 streamlines per subject, with a maximum turning angle of 35 degrees and a maximum length of 500mm [5]}. We held the number of streamlines between participants constant [6]}.
